Report of the Mixed Waste Landfill Phase 2 RCRA Facility Investigation Sandia National Laboratories, Albuquerque, New Mexico

Peace, Gerald L.; Goering, Timothy James; Mcvey, Michael D.

doi:10.2172/806699

Cited by 6 publications

(16 citation statements)

References 3 publications

(4 reference statements)

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“…The determination of the nature, rate, and extent of contamination was based upon an initial conceptual model validated with extensive, multimedia sampling (SNL/NM March 1993, Peace et al September 2002). There is low uncertainty in the land use scenario and the potentially affected populations.…”

Section: Long-term Reliability and Effectivenessmentioning

confidence: 99%

“…The identification of COCs in the soil and the sampling to determine the concentration levels of those COCs across the site are described in the MWL Phase 2 RFI Report (Peace et al September 2002). Generally, COCs evaluated in this risk assessment included all detected organic and all inorganic COCs for which samples were analyzed.…”

Section: Comparison Of Potential Cocs To Background Screening Levelsmentioning

confidence: 99%

“…Data collected from boreholes, groundwater monitoring wells, and instantaneous profile tests measure saturated and unsaturated zone characteristics and include volumetric water content, saturated and unsaturated hydraulic conductivity, bulk density, and isotopic chloride content. These data are summarized in the MWL Phase 2 RFI report (Peace et al September 2002). Based upon these data, recharge is negligible and most of the water from precipitation returns to the atmosphere via evapotranspiration.…”

Section: Fate and Transportmentioning

confidence: 99%

“…Because of the arid nature of the environment at the MWL, characterized by low rainfall and high potential evapotranspiration estimates, recharge to the water table at the MWL is insignificant under current climatic and vegetative conditions (Peace et al September 2002). Because groundwater beneath this site is approximately 500 feet bgs, the potential for COCs to reach groundwater through the unsaturated zone above the water Morse and Choppin (1991).…”

Section: Fate and Transportmentioning

confidence: 99%

“…The use of a streamlined approach for the MWL is justified based upon the results of both the MWL Phase 1 and Phase 2 RCRA Facility Investigations (RFIs) (SNL/NM 1990, Peace et al September 2002), and MWL groundwater monitoring . The results of these reports are presented in Sections 1.7.2, 1.7.3, and 1.7.4, respectively.…”

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confidence: 99%

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Mixed waste landfill corrective measures study final report Sandia National Laboratories, Albuquerque, New Mexico.

Peace¹,

Goering²

2004

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The Mixed Waste Landfill occupies 2.6 acres in the north-central portion of Technical Area 3 at Sandia National Laboratories, Albuquerque, New Mexico. The landfill accepted low-level radioactive and mixed waste from March 1959 to December 1988 This report represents the Corrective Measures Study that has been conducted for the Mixed Waste Landfill. The purpose of the study was to identify, develop, and evaluate corrective measures alternatives and recommend the corrective measure(s) to be taken at the site. Based upon detailed evaluation and risk assessment using guidance provided by the U.S. Environmental Protection Agency and the New Mexico Environment Department, the U.S. Department of Energy and Sandia National Laboratories recommend that a vegetative soil cover be deployed as the preferred corrective measure for the Mixed Waste Landfill.The cover would be of sufficient thickness to store precipitation, minimize infiltration and deep percolation, support a healthy vegetative community, and perform with minimal maintenance by emulating the natural analogue ecosystem. There would be no intrusive remedial activities at the site and therefore no potential for exposure to the waste. This alternative poses minimal risk to site workers implementing institutional controls associated with long-term environmental monitoring as well as routine maintenance and surveillance of the site. This final report represents the CMS that has been conducted for the MWL at SNL/NM. The purpose of the CMS was to identify, develop, and evaluate corrective measures alternatives and recommend the corrective measure(s) to be taken at the MWL. The DOE and SNL/NM implemented a streamlined approach to remedy selection. The CMS establishes corrective action objectives for the MWL that are designed to protect human health and the environment and identifies corrective measures alternatives that will achieve the corrective action objectives.In establishing corrective measures objectives and alternatives for the CMS, it was assumed that institutional controls (ICs) would be maintained at the MWL for the next 100 years. ICs are implicit in all proposed alternatives and include environmental monitoring, site surveillance and AL/3-04/WP/SNL04:r5485.doc 840857.04.04 03/04/04 2:34 PM 14 maintenance, and access controls. Corrective action objectives are based upon occupational (site worker), public health, and environmental exposure criteria; U.S. Environmental Protection Agency (EPA) guidance; and applicable state and federal regulations. Corrective action objectives developed for the MWL are designed to protect human health and the environment and take into consideration source areas, pathways, and receptors. The corrective action objectives developed for the MWL consist of the following: 1) minimize exposure to site workers, the public, and wildlife; 2) limit migration of contaminants to groundwater such that regulatory limits are not exceeded; 3) minimize biological intrusion into buried waste and any resulting release and redistribution ...

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Section: Long-term Reliability and Effectivenessmentioning

confidence: 99%

Section: Comparison Of Potential Cocs To Background Screening Levelsmentioning

confidence: 99%

Section: Fate and Transportmentioning

confidence: 99%

Section: Fate and Transportmentioning

confidence: 99%

mentioning

confidence: 99%

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Mixed waste landfill corrective measures study final report Sandia National Laboratories, Albuquerque, New Mexico.

Peace¹,

Goering²

2004

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Analytical risk-based model of gaseous and liquid-phase radon transport in landfills with radium sources

2008

Environmental Modelling & Software

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Using Fiber Optics to Detect Moisture Intrusion into a Landfill Cap Consisting of a Vegetative Soil Barrier

Weiss

2003

Journal of the Air & Waste Management Association

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The intrusion of moisture into landfills can pose a health hazard because of the possibility that the moisture will carry harmful substances into the groundwater. Early detection of moisture anywhere within these landfills is essential if corrective action is to be taken well before an occurrence of this kind. This paper presents the results of a field-scale simulation test of the use of fiber optics to detect the presence of moisture within landfill covers, using a detection method based on the thermal response of soils as a function of their moisture content. By sending electrical current through an embedded stainless-steel tube, soils of varying moisture content were heated and time-dependent temperature measurements were obtained with a fiber-optic distributed temperature sensor system. The optical fiber itself lay within the tube, but its temperature was a function of how rapidly heat was conducted into the surrounding medium. The results of this experiment, which are in agreement with those obtained using more traditional "point" sampling and laboratory analysis, are presented along with the strengths and limitations of the thermal-response method of detecting moisture.

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Report of the Mixed Waste Landfill Phase 2 RCRA Facility Investigation Sandia National Laboratories, Albuquerque, New Mexico

Cited by 6 publications

References 3 publications

Mixed waste landfill corrective measures study final report Sandia National Laboratories, Albuquerque, New Mexico.

Mixed waste landfill corrective measures study final report Sandia National Laboratories, Albuquerque, New Mexico.

Analytical risk-based model of gaseous and liquid-phase radon transport in landfills with radium sources

Using Fiber Optics to Detect Moisture Intrusion into a Landfill Cap Consisting of a Vegetative Soil Barrier

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